Trek Fuel EX 9.8 Gen 5 GX

Name: Trek Fuel EX 9.8 Gen 5 GX
Brand: Trek

2023 MountainTrail Manufacturer page

Trek Fuel EX 9.8 Gen 5 GX, color Satin Black Olive

Price: Not published

Prices shown first for United States
Europe: €6,399 Last known price
Travel: 140 / 130 mm Fork / rear shock
Wheels: 29″
Drivetrain: 1 × 12 30t / 10–52t
Gear range: 520%
Weight: 13.1 kg 28.9 lb · Reference configuration not specified
Frame: Carbon
Brakes: Hydraulic disc

Rider height by size (cm)

Size guide

21.5" High 187–195
21.5" Low 177–189

Components

19 of 21 identified

Parts found in a manufacturer catalog show their brand, model and key numbers, and the steps show how precisely they are identified: brand, series, model, or the exact product. The info button has every detail and the text the manufacturer published.

Frame and fork

1 part

Frame

OCLV Mountain Carbon main frame and stays, internal storage, tapered head tube, Knock Block, Control Freak internal routing, Carbon Armour, ISCG 05, magnesium rocker link, Mino Link, ABP, Boost148, 130 mm travel Not identified

Suspension

2 parts

Drivetrain

6 parts

Brakes

2 parts

Brakes
- SRAM G2
Disc rotors
- SRAM

Wheels and tires

4 parts

Cockpit and contact points

6 parts

Grips
- Bontrager
Handlebar
- Bontrager
Headset

Knock Block Integrated, 58-degree radius, cartridge bearing, 1-1/8'' top, 1.5'' bottom Not identified
Saddle
- Bontrager
Seatpost
- Bontrager
Stem
- Bontrager

Sizes and geometry

2 sizes Open in the geometry plotter

Enter your height to highlight matching ranges.

Size 21.5" High

Table

Reach 500mm

Stack 623mm

Wheelbase 1241mm

Head angle 66.5°

Seat angle 75.5°

Every size is drawn to the same scale, in millimeters. Explanatory schematic on an assumed 29″ wheel; exact published values are in the table below.

Size Reported by the manufacturer

Complete manufacturer geometry table 2 published sizes

Complete manufacturer geometry by size
Measurement
Reachmm	500	495
Stackmm	623	627
Top tube lengthmm	662	663
Seat tube lengthmm	500	500
Head tube lengthmm	120	120
Head tube angle	66.5°	66°
Seat tube angle	75.5°	75°
Chainstay lengthmm	436	437
Wheelbasemm	1241	1242
Front centermm	806	807
Bottom bracket dropmm	27	34
Bottom bracket heightmm	346	340
Standover heightmm	776	770
Fork rakemm	43	43
Trailmm	116	119
Stack/reach ratio	1.25	1.27

Not published by the manufacturer: Front travel, Rear travel, Crank length, Handlebar width, Stem length, Stem angle, Seatpost length and Dropper post travel.

Specifications

Frame and fork

Intended fit: Unisex
Frame material: Carbon
Bicycle weight: 13.1 kg

28.9 lb
Weight limit: 136 kg

299.8 lb

Suspension

Suspension configuration: Full suspension
Front travel: 140 mm
Rear travel: 130 mm

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 30
Largest chainring: 30
Rear sprockets: 12
Smallest sprocket: 10
Largest sprocket: 52
Lowest gear: 16.7 in
Highest gear: 87.0 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Hydraulic disc

Fit and controls

Seatpost: Dropper seatpost
Shifting: Mechanical

Additional specifications

Bottom bracket standard: BB86/BB92
Fork spring: Air
Tire clearance: Maximum tire width: 2.6″
Tire width: 2.5″
Wheel material: Carbon
Wheel size: 29″

Technical analysis

4 measures

How these figures sit among bicycles of the same class and model year. Context, not a ranking.

Front travel

140 mm

This value is within the central range for this class.

Cohort: Mountain / Trail Model year: 2023
Sample: 2,192 bicycles with this information
Coverage: 97.5% of the class

Lowest gear

16.7 gear inches

This value is below the central range for this class.

Cohort: Mountain / Trail Model year: 2023
Sample: 1,625 bicycles with this information
Coverage: 72.2% of the class

Highest gear

87.0 gear inches

This value is within the central range for this class.

Cohort: Mountain / Trail Model year: 2023
Sample: 1,625 bicycles with this information
Coverage: 72.2% of the class

Shifting

Mechanical

359 of 2,248 bicycles with this information use electronic shifting.

Cohort: Mountain / Trail Model year: 2023
Sample: 2,248 bicycles with this information
Coverage: 100.0% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 6.4 km/h
Highest gear: 33.3 km/h

Total gear range 520%

Technical details and class reference

These speeds describe the gearing at the selected cadence, not how fast you can ride.
Calculated from published gear-inch values and their wheel-size assumptions.
These gearing values describe the bicycle, not a selected frame size.
A 100% range means one ratio; 500% means the highest ratio is five times the lowest.
For e-bikes, motor assistance cutoff is not represented.

Gear-inch range

Lower gear-inch values travel less distance per pedal revolution; higher values travel farther.

This bicycle: 16.7–87.0 gear inches
Class reference (p10–p90): 17.1–98.6 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Mountain / Trail Model year: 2023
Lowest gear: 1625 bicycles with this information, 72.2% of the class
Highest gear: 1625 bicycles with this information, 72.2% of the class

Lineup changes

The published facts that differ across this family's builds and from the same model a year earlier. Missing information never counts as zero.

Differences across 2023 builds

Differences across 2023 builds
Specification	This bicycle Trek Fuel EX 9.8 Gen 5 GX	Trek Fuel EX 5 Gen 5	Trek Fuel EX 7 Gen 5	Trek Fuel EX 7 Gen 6	Trek Fuel EX 8 Gen 5	Trek Fuel EX 8 Gen 6
Frame
Frame material	Carbon	Aluminum	Aluminum	Aluminum	Aluminum	Aluminum
Bicycle weight	13.1 kg	15.7 kg	14.48 kg	15.97 kg	13.86 kg	15.65 kg
Fork material	Not informed	Not informed	Not informed	Not informed	Not informed	Aluminum
Suspension
Front travel	140 mm	140 mm	140 mm	150 mm	140 mm	140 mm
Rear travel	130 mm	130 mm	130 mm	140 mm	130 mm	140 mm
Drivetrain
Front chainrings	1	1	1	1	Not informed	1
Smallest chainring	30	30	30	30	Not informed	30
Largest chainring	30	30	30	30	Not informed	30
Smallest sprocket	10	10	11	10	10	10
Largest sprocket	52	51	50	51	51	51
Lowest gear	16.7 in	17.1 in	17.4 in	17.1 in	Not informed	17.1 in
Highest gear	87.0 in	87.0 in	79.1 in	87.0 in	Not informed	87.0 in
Cockpit
Derailleur hanger	Not informed	Not informed	Not informed	UDH	Not informed	UDH
Other specifications
Bottom bracket standard	BB86/BB92	BB86/BB92	BB86/BB92	BSA	BB86/BB92	BSA
Tire clearance	Maximum tire width: 2.6″	Maximum tire width: 2.6″	Maximum tire width: 2.6″	Maximum tire width: 2.5″	Maximum tire width: 2.6″	Maximum tire width: 2.5″
Tire width	2.5″	2.6″	2.6″	2.5″	2.5″	2.5″
Wheel material	Carbon	Aluminum	Aluminum	Aluminum	Aluminum	Aluminum
Wheel size	29″	27.5″ / 29″	29″	27.5″ / 29″	29″	27.5″ / 29″